<?php
/* 
 * Copyright (c) 2011 Antoine d'Otreppe de Bouvette
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

class FormItem {
    private $attr;
    private $label;
    private $error;
    private $widget;
    private $help;
    private $fieldName;
    
    public function __construct($namespace, $attr, $label, Widget $widget,
                                $help) {
        $this->fieldName = $namespace.'['.$attr.']';
        $this->label = $label;
        $this->widget = $widget;
        $this->attr = $attr;
        $this->help = $help;
    }
    
    public function widget($object=null, $id=null) {
        if ($object !== null) {
            $value = $object->{'get'.ucfirst($this->attr)}();
        }
        else {
            $value = null;
        }
        
        echo $this->widget->toHtml($this->fieldName, $value, $id);
    }
    
    public function label() {
        if ($this->label !== null) {
            printf('<label for="%s" class="aspyct-form-label">',
                    $this->fieldName);
            echo escape($this->label);
            echo '</label>';
        }
    }
    
    public function hasHelp() {
        return $this->help !== null;
    }
    
    public function help() {
        if ($this->hasHelp()) {
            printf('<span class="aspyct-form-help">%s</span>', $this->help);
        }
    }
    
    public function error() {
        if ($this->error) {
            echo '<span class="aspyct-form-error">'.$this->error.'</span>';
        }
    }
    
    public function setError($error) {
        $this->error = $error;
    }
    
    public function getWidget() {
        return $this->widget;
    }
}
